Double Concave Lens – 50mm Diameter, FL 100mm (Optically Worked Glass)

This high‑quality 50mm Double Concave Lens is crafted from spherical, optically true worked glass for exceptional clarity and precision in optical experiments. Featuring highly polished, ground edges, this lens ensures accurate light divergence and safe handling in classroom environments.

With a 50mm diameter and a focal length (FL) of –100mm, this lens is ideal for teaching core physics concepts such as image formation, ray diagrams, light divergence, and focal length measurement.

Key Features

• 50mm diameter double concave lens
• Focal length: –100mm (diverging lens)
• Made from optically true worked glass for high clarity
• Edges are ground and highly polished for smooth handling
• Ideal for light, optics, and ray‑diagram demonstrations
• Durable and suitable for repeated classroom use

Ideal for School Science Lessons

Perfect for KS3, GCSE, and A‑Level physics, this double concave lens is a versatile tool for exploring the behaviour of light. It is especially useful for:

• Demonstrating light divergence and negative focal length
• Constructing ray diagrams and optical setups
• Investigating lens equations and magnification
• Using with optical benches for precise measurements
• Teaching principles of image formation and virtual images

Accurate, durable, and classroom‑ready, this 50mm Double Concave Lens is an essential component of any school optics kit.